QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem894038
USGS iscgem894038
18 Jan 1951, 21:15
79 km SW of Adak, Alaska
A magnitude 6.1 mw earthquake at 45.9 km depth.
Published location
Where is 79 km SW of Adak, Alaska?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
51.439000, -177.551000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Catalog fields and provenance
Event ID
iscgem894038
Coordinates
51.439, -177.551
Network
iscgem
Significance
572